The structure of the poem "Tattoo" by Gregg Shapiro can be described best as free verse. This means that the poem doesn't follow any strict poetic rules such as rhyming schemes or a certain meter - the poet wrote the poem the way he wanted to, disregarding these "rules." A sonnet and a sestina have a specific number of lines, and thus follow rules which this poem doesn't. An ode is a poem written in honor of something, which this poem is not.
